There have been a few questions, surrounding the performance of PerformancePoint, especially with large data volumes. There are many things that can be done to improve PPS performance and Microsoft has released a very detailed white paper on large volume performance testing and detailed tuning. It includes a number of tests that can be run, and the results across a number of different server configurations. Well worth a read – can be found here:
http://go.microsoft.com/fwlink/?LinkID=100209&clcid=0x409
